347128 has 8 divisors (see below), whose sum is σ = 650880. Its totient is φ = 173560.

The previous prime is 347099. The next prime is 347129. The reversal of 347128 is 821743.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347129) by changing a digit.

347128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21688 + ... + 21703.

It is an arithmetic number, because the mean of its divisors is an integer number (81360).

2³⁴⁷¹²⁸ is an apocalyptic number.

It is an amenable number.

347128 is a deficient number, since it is larger than the sum of its proper divisors (303752).

347128 is a wasteful number, since it uses less digits than its factorization.

347128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43397 (or 43393 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 347128 is about 589.1756953575. The cubic root of 347128 is about 70.2796972587.

The spelling of 347128 in words is "three hundred forty-seven thousand, one hundred twenty-eight".